Tension rod adjusts from 16 to 28",rod diameter-4/8" , caps diameter-6/8" High-strength durable spring inside, can be used repeatedly ,one rod can bear 3-7lbs Choice of 5 colors for easy coordinating with surrounding décor Long-lasting metal rod is made of quality carbon steel with non-slip caps, corrosion-resistant and rust-proof，having longer service life Wide Usage: used as a curtain rod for window, doorway, wardrobe, bookcase , cupboard and shoe rack etc. It’s a good helper for DIY your home storage space ABOUT US KXLife is a new brand, We are a professional spring tension rods supplier.There are more rods in our amazon store, please search “KXLife”. Basic Information: -Bear Force:One rod can bear about 3-7 lbs. -Material: Steel, plastic caps -Diameter: Exterior rod-4/8inch(13mm),interior rod-3/8inch(10mm),caps-6/8inch,19mm -Package includes: 6 x Tension rods -Color: Pewter -Size:12-20 Inch(30-50cm) How to Chose? We have created a variety of tension rods sizes and colours to help you find the perfect one for your home. When you selecting tension rods, the length used should be measured.. If you're not sure which size is best for you,please refer to our recommend the optimal use length . □Size:12-20 Inch——Optimal Length:13-18 Inch □Size:16-28 Inch,——Optimal Length:18-26 Inch □Size:22-35 Inch,——Optimal Length:26-33 Inch □Size:28-48 Inch,——Optimal Length:33-47 Inch Tip: Please know that the friction of the wall and the extension of the rod will affect the use. In general, the more friction of the wall and the shorter extension of the rod, the better effect of use.